Crystal Explained: Ruby's Syntax, Compiled Speed
Introduction Ruby is beloved for its readable syntax and developer happiness — and criticised for its speed. Crystal, released in 2014, asks a simple question: what if you kept Ruby's syntax and compi
The Practical Developer
Practical tutorials, tools, and tips for developers.
Latest articles
Clojure Explained: A Modern Lisp on the JVM
Introduction Lisp is the second-oldest programming language still in use, and most programmers have never written it — yet its ideas (code as data, functions as values, macros) shaped everything after
R Explained: The Language That Thinks in Data
Introduction Python does data science well, but R was born for it: created in 1993 by statisticians at the University of Auckland, it thinks in vectors, tables, and distributions the way other languag
Perl Explained: The Duct Tape That Held the Internet Together
Introduction Before Python was the default scripting language, there was Perl. Released in 1987, it powered the early dynamic web, system administration, and bioinformatics — and its motto, "there's m
Haskell Explained: Pure Functions, Serious Power
Introduction Most languages let functions do anything: change variables, print, read files, crash. Haskell, released in 1990, forbids most of that — and programmers who learn it often say it changed h
Phoenix Explained: Real-Time Web Apps That Never Stop
Introduction Most web frameworks treat real-time features — live updates, chat, collaborative editing — as an add-on: bolt on WebSockets, manage connections yourself, hope it scales. Phoenix, released
Scala Explained: Objects and Functions on the JVM
Introduction Java gave the world a massive ecosystem and a verbose language; functional languages gave elegance and a smaller ecosystem. Scala, released in 2004, refused to choose: it runs on the Java
Julia Explained: The Language Built for Speed and Science
Introduction Scientific computing has long suffered a two-language problem: prototype in Python or MATLAB, then rewrite the slow parts in C or Fortran. Julia, released in 2012, was built to end that s
Stimulus Explained: Just Enough JavaScript for Server-Rendered Pages
Introduction Not every page needs a single-page app. If your server already renders good HTML — the Rails, Laravel, and Django way — bolting on React for a dropdown or a toggle is overkill, but writin